Campsurus janae,

Molineri, Carlos & Salles, Frederico F., 2017, Review of selected species of Campsurus Eaton 1868 (Ephemeroptera: Polymitarcyidae), with description of eleven new species and a key to male imagos of the genus, Zootaxa 4300 (3), pp. 301-354: 323

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Campsurus janae

sp. nov.

Campsurus janae  sp. nov.

( Figs. 75–76View FIGURES 68 – 76, 170View FIGURES 167 – 170)

Type material. Holotype ♂ i from COLOMBIA, Amazonas, Leticia, caño km 11 hacia Tarapacá , (aprox. S 4° 7' / W 69° 57'), 93 m, 28.i.1999, light trap 18–20 hs, MC Zúñiga, E Domínguez & C Molineri cols. (MUSENUV). Paratypes: 3 ♂ si (pharate imago) from BRAZIL, Amazonas, Manaus, Reserva Ducke, Igarapé afluente do Acará, S 02° 57'07" / W 59° 57'28", pennsylvania light trap, 17.v.2008, N Hamada col. ( CZNC).GoogleMaps 

Male imago. Length (mm [subimago measurements in brackets]): body, 7.0 [7.0–7.6]; fore wing, 6.5 [6.6]; hind wing, 2.8 [2.9–3.0]; fore leg, 4.0; cerci, 17.0 [broken at apex]. General coloration yellowish white, completely shaded with gray ( Fig. 170View FIGURES 167 – 170). Head completely shaded with black dorsally. Antenna yellowish, shaded with gray. Thorax ( Fig. 170View FIGURES 167 – 170). Pronotum yellowish, shaded completely with black except on median zones of anterior and posterior portions, medial line blackish; prosternum and propleura yellowish, shaded with gray. Mesonotum yellowish, shaded with gray on medial line, parapsidal sutures and between PSP; pleura and sterna yellowish with grayish mark anterior to wing insertion; sutures above coxa grayish; sternum shaded completely gray except median zone of furcasternal plate. Metanotum yellowish, shaded slightly with gray medially, metasternum shaded more widely. Legs. All legs whitish yellow, completely shaded gray. Wings. Membrane and veins yellowish translucent, veins shaded gray. Abdomen ( Fig. 170View FIGURES 167 – 170) yellowish white, shaded with gray almost completely, medial line blackish, with submedian black spot on each side of terga III –IX; terga VIII –X shaded gray more markedly. Abdominal sterna whitish, shaded with gray completely, darker on gill sclerites, submedian spot at each side of sterna I –VIII. Genitalia ( Figs. 7 5–76View FIGURES 1 – 12View FIGURES 13 – 24View FIGURES 25 – 34View FIGURES 35 – 50View FIGURES 51 – 59View FIGURES 60 – 67View FIGURES 68 – 76): yellowish white except pedestal orangeish; sternum IX with truncated hind margin ( Fig. 75View FIGURES 68 – 76), medial line, fore and hind margins blackish, fore margin with submedian anterior comma-shaped spot at each side of medial line; pedestal ( Fig. 75View FIGURES 68 – 76) of each side almost touching basally, strongly elongated, parastylus short, very broad and rounded apically with inner corner strongly projected; forceps translucent white; base of main lobe of penes ( Fig. 76View FIGURES 68 – 76) strongly expanded laterodorsally, ear-like, penes narrowing abruptly on apical half, main lobe of penes apically pointed and curved ventrally; secondary membranous lobe translucent, relatively short and cylindrical. Caudal filaments translucent whitish yellowish.

Etymology. This species is dedicated with much pleasure to Janice Peters who continuously encourages and helps us with the study of Polymitarcyidae  , especially Campsurus  .

Distribution ( Fig. 179View FIGURES 179). Colombia and Brazil (Amazonas).

Diagnosis. Campsurus janae  sp. nov. is known from male adults only. It can be distinguished from other species of Campsurus  by: 1) posterior margin of male abdominal sternum IX truncated ( Figs. 75View FIGURES 68 – 76); 2) pedestal almost touching each other medially, strongly elongated, parastylus short, broad and rounded apically, inner corner strongly projected ( Fig. 75View FIGURES 68 – 76); 3) base of main lobe of penes strongly expanded laterodorsally ( Fig. 76View FIGURES 68 – 76), penes narrowing abruptly on apical half, main lobe of penes apically pointed and curved ventrally; secondary membranous lobe relatively short and cylindrical; 4) small size (length of male fore wings 6.5 mm).

Discussion. Campsurus janae  sp. nov. is similar to C. pereirae  sp. nov., but the extremely large and elongated pedestal of C. janae  sp. nov. easily differentiates it. Campsurus janae  sp. nov. is described as a pharate male imago (still inside the subimaginal cuticle), but the characteristic genitalia are sclerotized and in their final configuration.


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